title: Bladder volume estimation from electrical impedance tomography.
abstract: Ubiquitous knowledge of bladder volume is of great interest to patients whose perception of bladder volume is impaired. A promising approach to provide frequent bladder volume estimates to the patient are automatic and noninvasive measurements by electrical impedance tomography (EIT). Previous studies have shown a linear correlation of abdominal electrical impedance and bladder volume. In this article, we present two methods to extract a volume estimate from EIT measurements. One method is based on the global impedance from a reconstructed image, the second method is based on a singular value decomposition of the raw voltage measurement vector. A performance evaluation in presence of noise is performed.
authors.forename: Thomas
authors.initials: T
authors.lastname: Schlebusch
authors.forename: Steffen
authors.initials: S
authors.lastname: Nienke
authors.forename: Susana Aguiar
authors.initials: SA
authors.lastname: Santos
authors.forename: Steffen
authors.initials: S
authors.lastname: Leonhardt
mesh_terms: D000465:Algorithms; D001698:Biomedical Engineering; D003198:Computer Simulation; D004553:Electric Conductivity; D017097:Electric Impedance; D020342:Finite Element Analysis; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D010264:Paraplegia / Q000503:physiopathology / Q000534:rehabilitation; D012399:Rotation; D012984:Software; D014054:Tomography / Q000379:methods*; D014057:Tomography, X-Ray Computed; D001743:Urinary Bladder / Q000000981:diagnostic imaging* / Q000473:pathology*